Copy and Paste Images in Appian

Hi All,

Our customer wants a functionality in Appian where let's say they took screenshot or snipped an image from anywhere and they should be able to paste into Appian without saving it to folder in their computers. basically they do not want to use File upload field which source a documents saved in the computer instead just snip an image and paste into Appian.

Is something like this is possible or exists in Appian?

Thanks